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Question

Agarose is usually extracted from the sea weed _______.


A
Porphyra
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B
Gracilaria
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C
Polysiphonia
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D
Spirogyra
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Solution

The correct option is B Gracilaria

Agarose is a polysaccharide generally extracted from certain red seaweeds i.e Gracilaria and Gelidium belonging to Rhodophyta division. Agarose is a linear polymer made up of the repeating unit of agarobiose, which is a disaccharide made up of D-galactose and 3,6-anhydro-L-galactopyranose. Agarose is the supporting structure in the cell walls of certain species of algae and which is released on boiling.

The marine red alga Porphyra has been used as edible seaweed used to wrap the rice and fish that compose the Japanese food.

The algae Polysiphonia is used for the isolation of Bromine.

Spirogyra is used as a potential source of natural bioactive compounds for antibiotic, antiviral, antioxidant, anti-inflammatory, and cytotoxic purposes.

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